Pete and Myka return to Washington on assignment. Their mission, to swap the Honjo Masamune-only the finest samurai sword ever forged - with a decoy before it's given as a gift to the President. But once at the Japanese Embassy, a sudden blast puts a wrench in their plan. Now suspects, the two are under guard as men in Hazmat suits, security and emergency response teams swarm the building. Via Farnsworth, they explain to Artie and Leena that it was like a bomb, but instead of blowing out, everything was yanked in and from what they gather the sword might have vaporized.